Image display apparatus

• US 20040206987A1
• Filed: 02/03/2004
• Published: 10/21/2004
• Est. Priority Date: 02/04/2003
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: Chi Mei Optoelectronics (InnoLux Corporation), Kyocera Corporation
• Inventors: Miwa, Koichi, Tsujimura, Takatoshi, Oohata, Mototsugu
• Granted Patent: US 7,227,304 B2
• Time in Patent Office: Days
• US Class Current: 257/225
• CPC Class Codes: H01L 27/14658 X-ray, gamma-ray or corpuscular radiation imagers measuring X-, gamma- or corpuscular radiation G01T1/00

Abstract

A transparent substrate is provided thereon with a first thin film transistor and a second thin film transistor to configure a driver circuit; a conductive layer to be connected to a data line or a scan line; a conductive layer to connect the first thin film transistor with the second thin film transistor; and an anode wire layer connected to the second thin film transistor. The anode wire layer is provided thereon with a light emitting diode including a plurality of light emitting layers and electron-hole pair generating layers alternately interposed between the light emitting layers.

Claims

1. An image display apparatus comprising:

a light emitting diode that includes a plurality of light emitting layers and electron-hole pair generating layers alternately interposed between the light emitting layers;

a driver element that controls a current flowing in the light emitting diode and has a current passage region composed of amorphous silicon;

a switching element that controls the driver element for drive state;

a data line that supplies a display signal to the switching element; and

a scan line that supplies a scan signal to the switching element.

2. The image display apparatus according to claim 1, wherein the light emitting layer includes an organic material.

3. The image display apparatus according to claim 1, wherein the driver element includes a thin film transistor having a channel layer composed of amorphous silicon.

4. The image display apparatus according to claim 1, wherein the electron-hole pair generating layer comprises a conductive layer having an optical transparency.

5. The image display apparatus according to claim 1, wherein the electron-hole pair generating layer comprises a metal oxide layer having optical transparency.

6. The image display apparatus according to claim 1, wherein the electron-hole pair generating layer comprises ITO (Indium Tin Oxide) layers.

7. The image display apparatus according to claim 1, wherein the electron-hole pair generating layer includes an ITO layer disposed close to a cathode of the light emitting diode and a cesium-containing conductive layer disposed close to an anode of the light emitting diode.

8. The image display apparatus according to claim 1, wherein the light emitting layer emits white light, the image display apparatus further comprises an optical filter to extract a light with a certain wavelength from the white light.

9. The image display apparatus according to claim 1, wherein the light emitting layer emits a light with a wavelength of 400 nanometers or below, the image display apparatus further comprises a color modulating unit that coverts the wavelength of the light emitted from the light emitting layer.

10. The image display apparatus according to claim 9, wherein the color modulating unit coverts the light emitted from the light emitting layer into lights with wavelengths corresponding to red, blue, and green.